advent

Solving Advent of Code problems in Clojure and Java to get hands-on fun experience with the language.

Each day I write down a "Today I Learned" (TIL) so I don't just solve the problem, but also keep track of what I've learned, tricks I found, or just problems I liked.

λ🎄.(λ🎅.🎄(🎅🎅))(λ🎅.🎄(🎅🎅))

Top References/Tools

• Learn Clojure (XinYMinutes) <-- Start here if you're totally new to Clojure
• Clojure Cheatsheet
• ClojureDocs - community examples
  • clojure.string
• Associative (Map) Destructuring
• regex.Pattern

Usage

Prerequisites:

1. Install Java
2. Install Clojure
3. Install Leiningen

Highly Recommended:

1. IntelliJ: the best Java IDE
   • Note: IntelliJ has a free Community Edition
2. Cursive: IntelliJ plugin that adds Clojure support
   • Note: Cursive has a free license for non-commercial

Start REPL (Most recommended)

$ lein repl

# repl starts. use -main as a sanity check

advent-clj.core=> (-main)
λ🎄.(λ🎅.🎄(🎅🎅))(λ🎅.🎄(🎅🎅))

Just run core.clj and exit

$ lein run

Build uberjar, a jar with Clojure & deps

$ lein uberjar

# The resulting standalone can be run by java, from anywhere, and executes core.clj 
$ java -jar target/uberjar/advent-clj-0.1.0-SNAPSHOT-standalone.jar

Compile only .java files

$ lein javac

# Howdy is a basic hello world example
$ java -cp target/default/classes/ com.valbaca.advent.Howdy

IntelliJ / Cursive notes

If you get ClassNotFound when running a method in Clojure in IntelliJ, configure the following:

• How to run it
  • Run with Leiningen
    • Profiles: dev

Progress

Advent of Clojure Progress

What I've completed in Clojure, within this repo

• Year 2015: 🎄 All in Clojure!
• Year 2016: 🎁 IN PROGRESS
• Years 2016 - 2020: ❄️ NOT STARTED in Clojure

Overall Personal Advent Account Progress

What I've completed in any language

• Year 2015: 🎄 DONE! Did days 1-19 in Go valbaca/advent-go, 19-22 in Python valbaca/advent-py, and rest in Java.
  • Again in Clojure to learn the language.
• Year 2016: 🎁 IN PROGRESS @ Day 19. Days 1-7 in Python, 8-18 in Java.
• Year 2017: ❄️ On ice.
• Year 2018: ❄️ On ice.
• Year 2019: ❄️ On ice.
• Year 2020: 🎄 DONE in Python in valbaca/advent-py
• Year 2021: 🎄 DONE in Python in valbaca/advent-py
• Year 2022: 🎄 DONE in Kotlin valbaca/advent-kt

License

Copyright © 2021 Valentin Baca

This program and the accompanying materials are made available under the terms of the Eclipse Public License 2.0 which is available at http://www.eclipse.org/legal/epl-2.0.

This Source Code may also be made available under the following Secondary Licenses when the conditions for such availability set forth in the Eclipse Public License, v. 2.0 are satisfied: GNU General Public License as published by the Free Software Foundation, either version 2 of the License, or (at your option) any later version, with the GNU Classpath Exception which is available at https://www.gnu.org/software/classpath/license.html.